Method and machine for cement lasting

ABSTRACT

A lasting machine that applies cement into the corner between a portion of the margin of an upper mounted on a last and an insole located on the last bottom and that wipes the margin portion against the insole so as to cementatiously attach the wiped margin portion to the insole.

United States Patent 11 1 1111 3,831,216 Vornherger Aug. 27, 1974 [54] METHOD AND MACHINE FOR CEMENT 3,251.08] 5/1966 Springer 12 142 R LASTING 3,477,079 11/1969 Bergcron et a1. 12/145 3,685.072 8/1972 Schindler et a1 12/12 175] In entor: a te n g Tewksbury, 3,691,575 9/1972 Vornberger 1. 12/145 Mass.

[73} Assignee: International Shoe Machine P i E in r-Patrick D. Lawson cmpol'atioll, Nashua, NH Attorney, Agent, or FirmA1bert Gordon [22] Filed: Aug. 6, 1973 [21] Appl. No: 386,129 57 ABSTRACT 12 145 12 I2 1 18/256 A lasting machine that applies cement into the corner [52] Cl 21/00 between a portion of the margin of an upper mounted [5 U m C] 0 410 7 3 on a last and an insole located on the last bottom and [58] held of l that wipes the margin portion against the insole so as 1 18/411 1 to cementatiously attach the wiped margin portion to [56] References Cited the UNITED STATES PATENTS 14 Claims, 23 Drawing Figures 3,035.287 5/1962 Vlcek et a1. 12/124 1 JMHi :IN

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sum 13 w 15 BACKGROUND AND SUMMARY OF THE INVENTION This invention is directed to improvements over the cement lasting machine disclosed in US. Pat. applications Ser. No. 227,376, filed Feb. 18, 1972, now US. Pat. No. 3,775,797 and US. Pat. Ser. No. 325,701, filed January 22, 1973 now US. Pat. No. 3,758,904.

The aforementioned machine includes an arrangement for supporting bottom up a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom with the opposite side portions of the upper margin extending upwardly of the insole. Lasting instrumentalities on each side of the support arrangement are caused to first engage the opposite side portions of the upper and then wipe the margins of these upper portions against the insole. The lasting instrumentalities are each mounted for inwardoutward movement on a base, and the bases are located on opposite sides of and outwardly of the support arrangement with each base also being mounted for inward-outward movement. Initially each base is located in an outer position with respect to the support arrangement, so that the shoe assembly can be readily placed on the support arrangement, and each lasting instrumentality is in an outer position with respect to its associated base. The bases are then moved inwardly, together with the lasting instrumentalities, to inner base positions wherein the lasting instrumentalities are close to but not in engagement with the sides of the shoe assembly. This is followed by a movement of the lasting instrumentalities inwardly of their outer positions on the bases so as to enable them to engage the opposite side portions of the upper and wipe the upper margin portions against the insole.

In the aforementioned machine, the lasting instrumentalities, when the bases have completed their inward movement, must always be disengaged from the shoe assembly and spaced a desired close distance from the shoe assembly. With the support arrangement of the aforementioned machine, each lasting instrumentality, when its associated base has completed its inward movement, will be a different distance from the shoe assembly or may actually engage the shoe assembly depending on whether the the shoe assembly is for a right foot or for a left foot due to the differences in the asymmetrical constructions of the left foot and the right foot shoe assemblies. In order to overcome this difficulty and to insure that the lasting instrumentalities are spaced the desired distance from the sides of the shoe assembly regardless of whether a left foot shoe assembly or a right foot shoe assembly is being operated on, the machine, in accordance with a first aspect of this invention, has been improved by providing a mechanism for selectively moving the part of the support arrangement that supports the toe portion of the shoe as sembly laterally in one of two opposite lateral directions.

In the aforementioned machine, the wiping of the opposite side portions of the upper margin against the insole is performed by lasting tools or straps that first apply relatively light back-up forces to the margin portions to fold them part way toward the insole. After this, cement nozzles are caused to travel along the sides of the insole periphery and outwardly thereof to the extent permitted by the margin portions, which are 2 backed up by the lasting tools or straps, and to apply 1 cement into the comers between the margin portions and the insole periphery. This is followed by causing the lasting tools or straps to apply relatively heavy wiping forces to the margin portions to wipe the margin portions against the insole and attach them to the insole by way of the cement. The purpose of having the margin portions folded part way toward the insole during the travel of the nozzles and the extrusion of cement through the nozzles is to cause the folded margin portions to create a barrier between the upper margin and the insole that inhibits the creeping of cement between the margin and the insole and then between the upper and the sides of the last. Shoe assemblies are so constructed that one side of the shoe assembly has a relatively pronounced reentrant portion and the other side of the shoe assembly has a less pronounced reentrant portion. The side of the shoe assembly having the relatively pronounced reentrant portion is different for left foot shoe assemblies and right foot shoe assemblies. The angle formed between the side of the last and the bottom of the last on the side of the shoe assembly having the relatively pronounced reentrant portion is an acute angle which is smaller than the angle, which is close to a right angle, formed between the other side of the last and the bottom of the last. Therefore, the folding of the upper margin part way towards the insole on the side of the shoe assembly having the relatively pronounced reentrant portion is needed to create the barrier between the upper margin and the insole while this folding is not needed to create the barrier on the other side of the shoe assembly. Moreover the folding of the margin part way toward the insole on the side of the shoe assembly having the less pronounced reentrant portion tends to prevent the nozzle: traveling along this side of the shoe assembly from reaching the periphery of the insole in the corner in which it is traveling which is undesirable for the subsequent cementatious attachment of the upper margin to the insole. In order to overcome this problem, in a second aspect of the invention only the lasting tool or strap on; the side of the shoe assembly having the relatively pronounced reentrant portion is caused to apply the relatively light back-up force to fold the upper margin part way toward the insole.

The aforementioned machine is intended to operate on a shoe assembly in which the upper margin of at least one end portion of the shoe has been wiped against the insole and to apply cement by a nozzle along a course of the upper margin that extends rearwardly of a boundary between an unwiped upper margin portion and the wiped end margin portion. The nozzle is connected to a yieldable drive means to effect forward-rearward movement of the nozzle and is caused to be located in a starting position in the corner between the unwiped margin portion and the corresponding portion of the insole periphery a particular distance rearward of the boundary. The drive means is then released to move the nozzle forwardly while the nozzle stays in the comer until the nozzle arrives at the boundary. Concomitantly with the arrival of the nozzle at the boundary, a reversing mechanism is actuated to cause the drive means to move the nozzle rearwardly while the nozzle stays in the corner and to cause cement to be extruded from the nozzle during its rearward movement. With this arrangement, the particular distance between the starting position and the boundary varies in accordance with the length of the shoe assembly and the forward-rearward location of the actuator for the reversing mechanism therefore has to be adjusted for each shoe assembly length.

In the third aspect of the invention, the inconvenience referred to at the end of the preceding paragraph is overcome by actuating the reversing mechanism a predetermined time after the drive means is released which time is equal to or greater than the minimum time it takes for the nozzle to move forwardly from the starting position to the boundary. Should the nozzle arrive at the boundary before the reversing mechanism is actuated, it will pause at the boundary, due to meeting resistance to forward movement at the boundary and due to its being driven forwardly by a yieldable drive means, until the reversing mechanism is actuated.

Each lasting instrumentality of the aforementioned machine is comprised of a plurality of separated side by side heightwise extending straps. In the machine operation, the lasting straps are caused to so engage the shoe assembly that a top segment of each strap extends upwardly of the insole and outwardly of a portion of the upper margin. A nozzle is then caused to travel along the insole periphery while yieldable downward and outward forces are applied to the nozzle and cement is extruded through the nozzle to cause the nozzle to bear against the insole and the margin portion and to enable cement to be extruded into the corner between the margin portion and the insole. After this, the nozzle is moved inwardly of the margin and upwardly of the insole and the top segments of the lasting straps are folded downwardly and inwardly against the insole to wipe the margin portion against the insole and attach it to the insole by way of the cement. Due to the separation between the lasting straps, the nozzle has a tendency to snag and get caught in the separation between the lasting straps and not move smoothly along the upper margin. In a fourth aspect of the invention, this difficulty is overcome be making that portion of the lasting straps that extend upwardly of the bottom of the insole when the lasting straps engage the shoe assembly integral instead of separated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an isometric view of the machine taken from the front of the machine;

FIG. 2 is an isometric view of the lasting instrumentalities of the machine;

FIG. 3 is an isometric view, taken from a side of the machine, of a cement applying mechanism of the machine;

FIG. 4 is an exploded isometric view of the support arrangement of the machine;

FIG. 5 is an isometric view of a portion of the support arrangement;

FIG. 6 is a view taken along the line 6 6 of FIG.

FIG. 7 is a partially sectional view of a lasting instrumentality;

FIG. 8 is a plan view of the cement applying mechanism;

FIG. 9 is a plan view of a drive mechanism of the cement applying mechanism for effecting movement in forward-rearward directions of the cement nozzles;

FIG. 10 is a view taken along the line 10 10 of FIG.

FIG. 11 is a view taken along the line 11 11 of FIG.

FIG. 12 is a side elevation, partially in section, taken along the line 12 12 of FIG. 8;

FIG. 13 is a partially sectional view taken along the line 13 13 of FIG. 12;

FIG. 14 is a section taken along the line 14 14 of FIG. 13;

FIG. 15 is a section taken along the line 15 15 of FIG. 13;

FIG. 16 is a section taken along the line 16 16 of FIG. 12;

FIG. 17 is a view taken along the line 17 17 of FIG.

FIG. 18 is a partially sectional view taken along the line 18 18 of FIG. 1;

FIGS. 19 and 19A are schematic representations of portions of the pneumatic central circuit of the machine;

FIG. 20 is a representation of the shoe assembly as it is supported in the machine at the beginning of a machine cycle;-

FIG. 20A is a view taken along the line 20A 20A of FIG. 20; and

FIG. 21 is a view showing the nozzles as they appear when applying cement into the corners between the side portions of the upper margin and the corresponding portions of the insole periphery.

DESCRIPTION OF THE PREFERRED EMBODIMENT The operator is intended to stand in front of the machine as seen FIG. I, and to the left of the machine as seen in FIG. 3. Directions extending toward the operator (right to left in FIG. 3) will be designated as forward and directions extending away from the operator (left to right in FIG. 3) will be designated as rearward. The front of the machine is closest to the operator and the back of the machine is furthermost from the operator.

Referring to the FIGS. 1 and 4, the machine includes a sleeve 10 that is fixedly mounted to a stationary bracket 12. A bar 14 is movably mounted in the sleeve 10 for heightwise movement. An air operated motor 16, that is secured to the bracket 12, has an upwardly extending piston rod 18 that is secured to the bottom of the bar 14, whereby the motor 16 can effect heightwise movement of the bar 14. A last pin 20 is mounted to the top of the bar 14.

Referring to FIGS. 1 and 4-6, a bracket 22, secured to the front of the bar 14, has a plate 24 that is received in a clevis formed at the back of a mount 26. A pin 28 pivotally mounts the mount 26 to the plate 24 for lateral swinging movement about the heightwise extending axis of the pin 28. A column 30 is secured to and extends upwardly of the mount 26 and a toe rest 32 is mounted to the top of the column 30. The mount 26, the column 30 and the toe rest 32 form a toe rest assembly. The toe rest 32 is located in front of the last pin 20. A pair of wings 34 are secured to the sides of the plate 24 and extend forwardly thereof on opposite sides of the mount 26. A cam 36 is threaded onto a screw 38 that is rotatably mounted in the mount 26 so that the forward-rearward position of the cam 36 in the mount 26 can be adjusted by rotating a knob 39 that is secured to the front of the screw 38. The sides of the cam 36 are adapted to engage the wings 34 to limit the extent of swinging movement of the mount 26, together with toe rest 32, about the axis of the pin 28. An air actuated motor 40 is mounted to each wing 34 and each motor 40 has a piston rod 42 that extends toward the mount 26.

The last pin and the toe rest 32 constitute a shoe support 43.

Referring to FIG. 1 and 3, a platform 44, located rearwardly of the last pin 20, has a gib 46 secured thereto that slidably receives a slide 48 for forwardrearward movement. A mount 50 is secured to the slide 48 and a downwardly extending hold-down 52 is secured to the front of the mount 50. An air actuated motor 54, mounted to platform 44, has a piston rod 55, that is secured to the slide 48 whereby the motor 54 can effect forward-rearward movement of the holddown 52.

Duplicate sets of lasting units 56 are located on opposite side of the shoe support 43, the left set of lasting units 56 in FIG. 1 being drawn in and only the outline of the right set of lasting units 56 being shown in FIG. 1.

Referring to FIGS. 1 and 2, each set of lasting units 56 is mounted for inward-outward movement on a table 58. An air actuated motor 60, mounted to each table 58, has a piston rod 62 that is secured to a base 64 of a set of lasting units 56 to thereby enable the .motors 60 to effect inward-outward movement of the sets of lasting units 56. A bolt 66 is mounted to each base 64 so as to be in registry with a flange 68 mounted to each table 58 and in registry with a valve 70 mounted in each flange 68.

Referring to FIGS. 2 and 7, each set of lasting units 56 is formed of a plurality of lasting units 72 located side by side that are mounted to a support 74 that is secured to and is located above a base 64. A flange 76 for each lasting unit 72 is secured to and extends upwardly of a support 74 and threadedly receives a bolt 78. Each bolt 78 extends through an outer slide bracket 80, forming a part of a lasting unit 72, that is slidably mounted to a support 74 for inward-outward movement. Each lasting unit 72 includes an inner slide bracket 82 that is mounted to a support 74 for inwardoutward movement. A knob 84 is pinned to the outer end 86 of each bolt 78, the outer ends 86 being of smaller diameter than the threaded portions of the bolts 78. The brackets are located between the shoulders located at the juncture of the larger and smaller diametered portions of the bolts 78 and shoulders formed at the inner ends of the knobs 84. Due to the connection between the outer brackets 80 and the inner brackets 82, described below, rotation of the knobs 84 in one direction or the other will cause inward or outward movement of the brackets 80, 82 along the supports 74 and thus cause inward or outward movement of the lasting units 72.

An air operated motor 88 is pivoted to each outer bracket 80 and extends inwardly thereof. The piston rod 90 of each motor 88 is pivoted by a pin 92 to the middle of a lever 94. Each lever 94 has an upper limb 96 and a lower limb 98, the limbs extending inwardly of the pin 92. Each limb 98 is pivoted by a pin 100 to a lever 102. The bottom of each lever 102 is pivoted by a pin 104 to a block 106 for inward-outward movement about the axis of the pin 104. Each block 106 is pivoted for heightwise movement to an inner slide bracket 82 by a pin 108. A shaft 110, mounted to and upstanding from each bracket 82 inwardly of its associated pin 108, extends through its associated block 106. Conpression springs 112 are entwined about the shafts and extend between the tops of the blocks 106 and collars 114 mounted to the tops of the shafts 110. The springs 112 yieldably urge the blocks 106 downwardly about the axes of the pins 108 to positions wherein the bottoms of the blocks 106 engage collars 116 that are mounted to the shafts 110 beneath the blocks 106.

A lasting instrumentality 118 is anchored to each block 106 by bolts 120. Each lasting instrumentality 118 is formed of three plies, the outer ply being an outer presser strap 122, the middle ply being an inner presser strap 124, and the inner ply being a lasting strap 126. The straps 122,124 and 126 are made of an elastic, flexible and deformable material such as urethane. The straps 122, 124 and 126 respectively have bottom segments 122a, 124a and 126a that are rigid by virtue of being secured to the block 106 by the bolts 120. The top of each lasting strap 126 is formed into a thickened relatively rigid top segment 126b. The middle segment 126C of the lasting strap 126, between the bottom segment 126a and the top segment 126b, is flexible, deformable and stretchable.

The top of each inner presser strap 124 is formed into a thickened relatively rigid top segment 12412 that is located below its associated lasting strap top segment 12612. The middle segment 1246 of the inner presser strap 124, between the bottom segment 124a and the top segment 124b, is flexible, deformable and stretchable.

The top of each outer presser strap 122 is formed into a thickened relatively rigid top segment l22b that is located below its associated inner pressure strap top segment 124b. The middle segment 1226 of the outer presser strap 122, between the bottom segment 122a and the top segment 12211, is flexible, deformable and stretchable.

A lug 128, embedded in the outer presser strap top segment 122b, has a pin 130 mounted thereto that is slidably received in a slot 132 formed at the top of each lever 102.

A lug 134, embedded in the inner presser strap top segment 124b, is pivoted by a pin 1.36 to a link 138, and each link 138 is pivoted by a pin 140 to the top-of its associated limb 96.

An air operated motor 142 is associated with each lasting instrumentality 118. Each motor 142 is pivoted to a bracket 144 that is secured to the top of each outer bracket 80. The motors 142 extend inwardly of the brackets 144. A socket 146 is embedded in each lasting strap top segment 126b. Each socket 146 rotatably receives a ball 148 that is mounted to the inner end of the piston rod 150 of its associated motor 142 to thereby provide a flexible connection between the piston rods 150 and the lasting strap top segemnts 12612.

As can be seen in FIG. 2, the lasting straps 126 in each of the sets of lasting units 56 are separated from each other from their bottoms up to points 152 that are approximately level with the bottoms of the top segments 12412 of the inner presser straps 124 and are integral above the points 152 in the region 153.

Referring to FIGS. 3 and 8, a pair of front posts 154 and a pair of back posts 156 are upstanding from the platform 44. The posts 154 and 156 are located on opposite sides of the platform 44 and a pair of slide rods 158 are secured to and extend between each set of posts 154 and 156 so as to be located on opposite sides of the platform 44 and so as to extend in forwardrearward directions. A bearing 160 is slidably mounted on each slide rod 158 for forward-rearward movement and a slide plate 162 extends between the bearings 160 and is secured to bearing blocks 164 that are mounted to each of the bearings 160.

An air operated motor 166 is pivoted to a post 168 that extends upwardly of the back of the platform The motor 166 extends forwardly of the post 168 and has a forwardly extending piston rod 170 that is pivoted by a pin 172 (FIG. 9) to a link 174 between the ends of this link. One end of the link 174 is pivoted by a pin 176 to the front of a link 178, the back of the link 178 being pivoted to a post 180 that extends upwardly of the platform 44 forwardly of the post 168. The link 174 extends rearwardly of the pin 176 and laterally towards a side of the platform 44, and the end of the link 174 remote from the pin 176 is pivoted to a post 182 that extends upwardly of the link 174 and is secured to a bearing block 164.

Referring to FIGS. 9 and 11, a projection 184 extends inwardly of the bottom of a post 186 that depends from a bearing block 164. A valve 188, mounted to the projection 184, has a forwardly directed valve stem 190 that is spring urged forwardly by the conventional spring in the valve 188 so as to urge the valve stem 190 against a valve actuating rod 192 that is pivoted to the projection 184 for forward-rearward swinging movement about the axis of a pin 194. The valve stem 190 urges the rod 192 fowardly about the axis of the pin 194 to a position wherein the front of the rod 192 engages a stop pin 196 that is upstanding from the projection 184.

Referring to FIG. 11, a column 198 is mounted in the machine adjacent the front posts 154 for forwardrearward adjustment by means that are not shown. A support 200 extends rearwardly of this column. An air actuated motor 202 is pivoted to a clevis 204 mounted to the support 200 and the piston rod 206 of the motor 202 extends rearwardly of this motor. The top of a bar 208 is pivoted to a clevis 210 that is secured to the back of the piston rod 206. The bottom of the bar 208 is so pivoted to the back of the support 200 that a stop lug 212 extends below the support 200 in alignment with the outer end of the rod 192 that is remote from the pin 194.

Referring to FIG. 12, a cement pot 214 is mounted to the slide plate 162 for forward-rearward movement therewith. The cement pot includes a funnel 216 into which solid granules of thermoplastic cement is supplied and a storage chamber 218 into which the solid cement gravitates from the funnel 216 and in which the cement is melted by heating means (not shown). The molten cement gravitates from the chamber 218 through the passage 220 and an orifice 222 in a hollow sleeve 224 into a bore 226 forming the hollow interior of the sleeve 224. The sleeve 224 is mounted to the cement pot 214. An air operated motor 228, also mounted to the cement pot 214, has a downwardly depending piston rod 230 to which is attached a downwardly depending plunger 232 that is slidable in the bore 226. An orifice 234 in the bottom of the sleeve 224 has a valve seat 236 formed thereon that is cooperative with a ball valve 238 to close the orifice 234 in response to upward movement of the plunger 232 in the manner described below. The ball valve normally rests on a support member 240 that is mounted to the cement pot 214 so that communication is provided between the orifice 234 and a passage 242 located below the orifice 234.

Referring to FIGS. 12 and 13, a prong 244 is secured to and extends downwardly and forwardly of the cement pot 214. A block 246 is pivoted to a post 248 extending upwardly of the front of the prong 244 for swinging movement about the upright axis of the post 248. A projection 250 (FIG. 8) extends laterally of each side of the block 246 and a stabilizer bolt 252 is secured to each projection 250 with a head 254 of each bolt 252 extending rearwardly of its associated projection 250. As shown particularly in FIGS. 8 and 10, a pair of single acting spring return air operated motors 256 are so mounted to the slide plate 162 that their forwardly directed piston rods 258 are in alignment with the bolt heads 254.

A pair of aligned spindles 260 (FIG. 13) are mounted for swinging movement about a horizontal axis in projections 262 of the block 246, the spindles having extensions 264 that extend outwardly of the block 246. A heightwise extending spindle 266 (see FIGS. 13 and 14) is rotatably mounted in each spindle extension 264 and a nozzle carrier 268 is mounted to an extension 270 of the spindle 266 so as to extend forwardly thereof. A nozzle holder 272 is mounted to the front of each nozzle carrier 268 and a nozzle 274 (FIG. 15) is mounted to and depends downwardly of each nozzle holder 272. Interconnected passage means 276 in the cement pot 214, the prong 244, the block 246, the post 248, the spindles 260, the spindle extensions 264, the spindles 266, the nozzle carriers 268, the nozzle holders 272 and the nozzles 274 provide communication for the molten cement between the passage 242 and passages 278 (FIG. 15) located in each of the nozzles 274. Strategically located electric cartridge heaters, such as the heaters 280 shown in FIGS. 14 and 15, serve to maintain the cement that is in the passage means 276 and the passages 278 molten. A check valve 282 (FIG. 15) in each nozzle holder 272 yieldably blocks the flow of cement through the passage means 276.

Each spindle extension 270 has a bar 284 (FIGS. 12 14) extending rearwardly thereof that has a bar 286 depending from its back end. Each bar 286 is mounted to a yoke 288. One of the yokes 288 is secured to the cylinder 290 (FIG. 16) of an air operated motor 292 and the other yoke 288 is secured to the piston rod 294 of this motor. As described below, the operation of the motor 292 serves to swing the nozzle carriers 268 and the bars 284 about the axes of the spindles 266. The extent of outward movement of the bars 284 and the extent of inward movement of the nozzle carriers 268 is determined by the engagement of the bars 284 with stop bolts 296 that are located outwardly of the bars 284 and are mounted to bars 298 that in turn are secured to their associated block extensions 264.

A rod 300 (FIG. 10) attached to and extending rearwardly of each projection 250 of the block 246 has a post 302 depending from its back, and an air operated motor 304 is pivoted to the bottom of each post 302.

A lug 306, depending downwardly of and connected to each spindle extension 264, is pivoted to a clevis 308 that is securd to the piston rod 310 of its associated motor 304, the piston rods 310 projecting forwardly of the motors 304. 

1. In a lasting machine, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for performing operations on the opposite side portions of the shoe assembly that includes engaging the shoe assembly and wiping the margins of selected opposite side portions of the upper against the cOrresponding portions of the insole, that comprises: support means for so supporting bottom-up the shoe assembly that the toe of the shoe assembly faces forwardly with said margin portions extending upwardly of the corresponding portions of the insole periphery; a base, mounted for inwardoutward movement, located outward of and on each side of the support means; a lasting instrumentality mounted to each base for inward-outward movement; means so constructing each lasting instrumentality as to enable it, when it is moved inwardly of an outer position on its base, to perform said operations on its associated side portion of the shoe assembly; means for initially maintaining each base in an outer position with respect to the support means and for initially maintaining each lasting instrumentality in its outer position with respect to its associated base so that the shoe assembly may be placed on the support means; means for thereafter moving each base inwardly to an inner position wherein its associated lasting instrumentality is close to but not in engagement with the shoe assembly; and means for thereafter moving each lasting instrumentality inwardly of its outer position with respect to its associated base to cause it to perform said operations on the shoe assembly; the improvement wherein said support means comprises: means supporting the toe portion of the shoe assembly for lateral movement in two opposite lateral directions; and further comprising: means for selectively moving said toe portion laterally in one or the other of said lateral directions prior to the movement of the bases to their inner positions.
 2. The mechanism of claim 1 wherein said means supporting the toe portion of the shoe assembly for lateral movement in said lateral direction, comprises: a last pin adapted to be inserted into the back portion of the last so as to enable the last to swing laterally; and a toe rest assembly, adapted to support the vamp of the shoe assembly, located forwardly of the last pin, mounted for lateral movement; and wherein said means for selectively moving said toe portion laterally comprises: a rod, mounted for lateral movement, located on each side of the toe rest assembly; and means for selectively moving each of said rods into engagement with the toe rest assembly.
 3. The mechanism of claim 2, further comprising: a plate located forwardly of the last pin; wherein said toe rest assembly comprises: a mount pivoted to the plate and extending forwardly thereof; and a column fixed to and extending upwardly of the mount, said toe rest being fixed to the top of said column; further comprising: a pair of wings fixed to and extending forwardly of the plate on opposite sides of the mount; a motor mounted to each of said wings, each of said motors being so constituted as to have one of said rods as its driven element; and a cam secured to said mount in intersecting relationship with respect to said wings to thereby limit the extent of pivotal movement of the mount relative to the plate pursuant to selective inward movement of the rods; and wherein said means for selectively moving said rods comprises: means for selectively actuating said motors to selectively cause the motors to move their associated rods inwardly into engagement with said mount.
 4. In the machine of claim 1 wherein the machine is so constructed that the lasting instrumentalities, when they are moved inwardly of said outer positions, first engage said margin portions and then wipe said margin portions against the corresponding portions of the insole; wherein the machine further comprises: a block, located above the insole, mounted for movement in forward and rearward directions and mounted for lateral movement in two opposite lateral directions; a pair of nozzles mounted to the block for heightwise movement and for lateral inward-outward movement; means for initially so locating the nozzles with respect to the block that they are in upper and inner positions with respect to the block; means for initially so locaTing the block that the nozzles are in prescribed forward-rearward positions; means for thereafter, and after the lasting instrumentalities have engaged said margin portions but before the lasting instrumentalities have wiped said margin portions, lowering the nozzles with respect to the block against the insole and for moving the nozzles outwardly with respect to the block into the corners between said margin portions and the corresponding portions of the insole periphery; means for thereafter moving the block, together with the nozzles, a prescribed distance in one of said forward and rearward directions while the nozzles continue to stay in said corners and for concomitantly extruding cement from the nozzles into said corners; means for thereafter moving the nozzles inwardly with respect to the block and inwardly of said corners and for raising the nozzles upwardly with respect to the block and upwardly of the insole; and means for thereafter causing the lasting instrumentalities to wipe said margin portions against the insole; the improvement comprising: means, operative prior to the lowering and outward movement of the nozzles while the nozzles remain in their inner positions with respect to the block, for selectively moving the block, together with the nozzles, laterally in the same lateral direction in which said toe portion has been selectively laterally moved.
 5. The combination of claim 4 wherein the machine further comprises: a plate mounted for movement in forward-rearward directions; and pivot means mounting the block to the plate for swinging movement about a heightwise axis that is located intermediate the lateral ends of the block; and wherein said means for selectively moving the block comprises: means for selectively swinging the block one way or the other about said axis.
 6. The combination of claim 5 wherein the machine further comprises: a pair of motors mounted to said plate, said motors having rods that, in response to actuation of the motors, are movable in paths that are in intersecting relationship with said block on opposite sides of said axis; and wherein said means for selectively moving the block comprises: means for selectively actuating one or the other of said motors.
 7. A method of lasting, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for wiping a first portion of the upper margin on a first side of the shoe assembly that has a relatively pronounced reentrant portion against the corresponding portion of the insole and for wiping a second portion of the upper margin on the second side of the shoe assembly that has a less pronounced reentrant portion against the corresponding portion of the insole comprising: supporting the shoe assembly bottom-up with said margin portions extending upwardly of the insole; locating a first lasting tool outwardly of said first margin portion; locating a second lasting tool outwardly of said second margin portion; folding only said first margin portion part way towards the insole by causing only the first lasting tool to apply a relatively light back-up force inwardly against the exterior surface of said first margin portion; thereafter moving a nozzle along each of the side peripheries of the insole and outwardly thereof to the extent permitted by said margin portions; extruding cement from the nozzles into the angles between the insole side peripheries and said margin portions during said movements of the nozzles; and thereafter folding said margin portions against the insole by causing both lasting tools to apply relatively heavy wiping forces inwardly against the exterior surfaces of said margin portions to thereby wipe said margin portions against the insole and attach them to the insole by way of said cement.
 8. A lasting machine, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for wiping the opposite side portions of the upper margin against the corresponding pOrtions of the insole, one of the side portions of the shoe assembly having a relatively pronounced reentrant portion comprising: a support for supporting the shoe assembly bottom-up with said margin portions extending upwardly of the insole; a lasting tool located outwardly of the support on each side of the support, each lasting tool being mounted for movement between a first position wherein it extends outwardly of an associated one of said margin portions and upwardly of the corresponding portion of the insole and a second position wherein it extends downwardly and inwardly of its first position so as to wipe its associated margin portion against the insole; means for initially locating both lasting tools in their first positions; means for thereafter moving only a selected one of said lasting tools from its first position to an intermediate position between its first and second positions by applying a relatively light inwardly directed back-up force to said selected lasting tool so as to fold its associated margin portion, on the side of the shoe assembly having said relatively pronounced reentrant portion, part way toward the insole; said margin portions providing back-ups during the movements of cement applying nozzles along the sides of the insole periphery and outwardly thereof to the extent permitted by said margin portions; and means for thereafter, after a time interval sufficient to enable the nozzles to complete said nozzle movements, moving said selected lasting tool from its intermediate position to its second position and the non-selected lasting tool from its first position to its second position by applying relatively heavy inwardly directed wiping forces to the lasting tools so as to wipe said margin portions to the insole and attach them to the insole by way of the cement.
 9. The lasting machine according to claim 8 further comprising: control means associated with each of said lasting tools; and means responsive to the actuation of each of said control means for causing its associated lasting tool to operate as aforesaid as the selected lasting tool.
 10. A lasting machine, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for wiping the opposite side portions of the upper margin against the corresponding portions of the insole, one of the side portions of the shoe assembly having a relatively pronounced reentrant portion, comprising: a support for supporting the shoe assembly bottom-up with said margin portions extending upwardly of the insole; a heightwise extending lasting strap located outwardly of the support on each side of the support; means for initially causing each lasting strap to engage the shoe assembly with a top segment of each lasting strap extending upwardly of the insole and outwardly of an associated one of said margin portions; means for thereafter folding only a selected one of said lasting strap top segments downwardly and inwardly part way towards the insole by applying an inward back-up force to said selected lasting strap top segment to thus fold its associated margin portion, on the side of the shoe assembly having said relatively pronounced reentrant portion, downwardly and inwardly part way towards the insole; said margin portions providing back-ups during the movements of cement applying nozzles along the sides of the insole periphery and outwardly thereof to the extent permitted by said margin portions; and means for thereafter, after a time interval sufficient to enable the nozzles to complete said nozzle movements, folding said selected lasting strap top segment further downwardly and inwardly against the insole and folding the nonselected lasting strap top segment downwardly and inwardly against the insole by applying inward wiping forces of a greater magnitude than said back-up force to said lasting strap top segments to thus wipe said upper margin portions against the insole and attach them to the insole by way of the cement.
 11. The lasting machine accorDing to claim 10 further comprising: control means associated with each of said lasting straps; and means responsive to the actuation of each of said control means for causing its associated lasting strap to operate as aforesaid as the selected lasting strap.
 12. The lasting machine according to claim 10 wherein said means for applying said back-up force and said means for applying said wiping forces comprise: a drive rod, located outwardly of each of said top segments, mounted for inward-outward movement; a flexible connection between each drive rod and its associated top segment; means for initially maintaining both drive rods in outer positions; means for thereafter moving a selected drive rod, associated with the selected lasting strap top segment, inwardly under a relatively low pressure to thereby effect said back-up force; and means for thereafter moving said selected drive rod further inwardly and for moving the non-selected drive rod inwardly under relatively high pressures to thereby effect said wiping forces.
 13. The lasting machine according to claim 12 further comprising: control means associated with each of said drive rods; and means responsive to the actuation of each of said control means for causing its associated drive rod to move inwardly under said relatively low pressure.
 14. A lasting machine, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, for wiping a selected portion of the margin of the upper against the corresponding portion of the insole and cementatiously attaching said margin portion to said insole portion comprising: a support for supporting the shoe assembly bottom-up with said margin portion extending upwardly of the insole; a lasting instrumentality located outwardly of the support, the lasting instrumentality comprising at least two side by side heightwise extending straps that are separated from each other from their bottoms up to a point and are formed into an integral region above the point; a nozzle, located above the shoe assembly, mounted for movement lengthwise of the shoe assembly; means for causing the lasting instrumentality to so engage the shoe assembly that said straps below the point are pressed against the shoe assembly, that said point is no higher than the bottom of the insole and that said integral region extends upwardly of the insole and outwardly of said margin portion; means for thereafter applying a yieldable downward force and a yieldable outward force to the nozzle to cause the nozzle to bear against the insole and against said margin portion in the corner between the insole and said margin portion; means for thereafter moving the nozzle lenthwise of the shoe assembly while said yieldable downward and outward forces are maintained and for concomitantly extruding cement from the nozzle into said corner; means for thereafter moving the nozzle inwardly of said corner and for raising the nozzle upwardly of the insole; and means for thereafter folding that part of the lasting instrumentality integral region that extends above the insole downwardly and inwardly to thus wipe said margin portion against the insole and attach it to the insole by way of the cement. 